.classes_box {
    margin: 0 20px 10px;
    box-shadow: rgba(99, 99, 99, 0.2) 0 2px 8px 0;
    display: flex;
    /*padding: 20px;*/
    gap: 20px;
}

.classes_box li {
    list-style: none;
    /*margin-right: 40px;*/
    align-items: center; /* 垂直居中 */
    display: flex;
    color: #555666;
}